Scraper attachment for tractors



J. P. BYSON Dec. 8, 1931.

SCRAPER ATTACHMENT FOR TRACTORS Filed Jan. 15, 1929 Zia/4972127: I W 3, @7474 Azzi s.

Patented Dec. 8, 1931 Jenni. BYSON, or ALeoNA, IOWA,

sonArER ATTACHMENT {FOR crisscross Application filed January 15, 1929. Serial No. 332,702.

ly close together and adapted to travel between two rows of standing vegetation, such as corn, when the ground is muddy and covered with trash, inasmuch as the mud and trash gather on the wheels and collect between the upper surfaces of the wheels and the frame in such a manner as to clog the wheels and stop their rotation.

It is therefore the object of my invention to provide a scraper device which may be attached to a tractor ofthe type above de scribed, in such a mannerthat the scraper will be rigidly adapted to swing with the front wheels to be constantly in operative relation with the periphery-of said wheels in such manner as to scrape the periphery free of-dirt'and foreign matter to prevent clogging. V More specifically it is the object of my in- .venticnto' provide a scraper device which may be used in-connection withthat type of tractors having a fixed downwardly extending sleeve supported at the forward end of the tractor forcarrying the steering post, and provided with'an axle'secured to the lower end of'said steering post with wheels carried by said axle and supported close to the sleeve, wherebythe scraper may be supported in rigid relation with the wheels and at the same time permitted to-swing freely therewith, and mounted in such relation with said wheels that it will not interfere with the mechanism carried by? said tractor frame.

My invention consists in the construction, arrangement and. combination of the various F parts of the device, whereby theobjects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure l'is a side elevation of'the front supported and at the. same time 'ing its forward end bent end of a tractor showing the manner in which my improved scraper device is applied to the steering axle, a portion'of the wheel being broken away to illustrate said scraper device.

' Figure 2 is a rear elevation of the supports ing wheels with a portion of the supporting .TIUNITED STATES PATENT oFr c AssIGnoR T0 HOB-AGE wer'rnns, or RooxwnLL eIrY, IOWA a i sleeve and the scraper devices attached to the V axle. v 1 Figure 3 is a detail sectional view taken on the line 33 of Figure 1. v

Figure 4 is a perspective view of the scraper attachment removed from the tractor. r i

The numeral 10 indicates the frame of a tractor having at its forward end a downwardlyprojecting sleeve 11 rigidly secured to saidyframe. The sleeve 11 is provided with a steering post 12 having at its lower end an axle 13 of rectangular crosssection,

each end of the axle being provided with a wheel 1d. It will be seen in Figures2 and 3 that the said axle is very short which permits the wheels to operate close to the sleeve The axle13 is secured to the post-12 by meansof a set screw 15. The'upper end of the post 12 isprovide'd with gear mechanism 16, by means of which. the said post is rotated, which in turn .vill cause the'axle 13 to be swung about a verticalaxis for steering the tractor. v i

My improved scraper device comprises a scraper arm 17 made of ahea'vy flat bar havto form a depression or recess 18, which is under surface of the axle 13 with the shoulders 19 of the recess resting against the forward and back surfaces of the axle.

The arm is secured in position-by removing the set screw and passing it upwardly through an opening 20 in the said arm. The original set screw of the'axle13 is substituted with a longer and similar setscrew. By this means the scraper arm is rigidly secured to thennder surface of the" axle and projects horizontally; and rearwardly -midway "between the wheels 14;, with-the rear end'ofthe back surface of the said wheels: i r A brace 21 has oneend secured arm extending a slight distance beyond the adapted to fitthe to the upper surface of the rear end of the arm 17 by means of suitable bolts 22. The brace is designed to extend upwardly and forwardly and has its forward end provided with a bifurcated bearing portion 23. Lugs 24 are provided for receiving a bolt 25. The members 23 are formed of bendable material so that the said members 23 may be forced into position around the sleeve 11 by passing said sleeve between the members 24:, after which the bolt 25 is placed in position and the free ends of the members 23 drawn together so that the said members 23 are rotatively mounted on the sleeve 11.

Split collars 26 are placed above and below the members 23 and rigidly secured in position by means of bolts 27, to prevent longitudinal movement of the members 23 relative to the sleeve 11. By this means it will be seen that the rear end of the scraper arm is rigidly supported against up and down movement, and especially against upward movement, as it will be seen that tremendous upward strain is imparted to the scraper arm as the wheels 14 rotate.

The rear end of the arm 17 is also provided with slots 28 and 29 for receiving bolts 30 and 31. The bolts 30 are adapted to adjustably secure a scraper bar 32 to the under surface of the arm 17. Each end of the scraper bar 32 is provided with a downwardly and forwardly extending scraper member 33. The members 33 are designed to engage the inner edge of the periphery of the wheels 14; inside of the flanges 33.

A second scraper bar 34 may also be provided which is secured in position by means of the bolts 31. The bar 34 has scraper devices 35 designed to engage the periphery of the wheels 14 outside of the flanges 33 in the manner clearly illustrated in Figures 2 and By this arrangement it will be seen that I have provided a scraper device which may be easilv and quickly attached to that tvpe of tractors having a fixed downwardly extending sleeve and an axle of rectangular cross section, pivotally mounted to the lower end of said sleeve, so that the scraper is adapted to swing with the wheels and to always be in operative relation with the wheels, and to free the periphery of said wheels from mud and foreign matter before they are car ried to the junction point of the sleeve 11 and the frame 10.

By providing the arm 17 of comparatively fiat and wide metal and providing a recess to fit the under surface of the axle and securing the arm in position by means of set screws 15, it will be seen that means is provided for rigidly supporting the arm against lateral movement relative to the axle, while the brace 21 provides means for rigidly supporting the rear end of the arm against upward movement, and at the same time permits the scraper devices to freely move in conjunction with the swinging movement of the wheels.

It will further be seen that the scraper device is mounted substantially within the space between the wheels to not interfere with overhanging mechanism at eachside of the wheels, which is often used in connection with farm tractors of this type, such as cultivator attachments. Any device supported outside of the steering wheels would more or less interfere with the operation of these auxiliary attachments.

Thus it will be seen that I have provided a scraper attachment of simple, durable and inexpensive construction which may be easily and quickly attached to a number of the tractors now in commercial use, and which is adapted to prevent clogging of the wheels when the tractor is operated in muddy fields.

I claim as my invention:

1. A scraper attachment for tractors com prising a flat scraper arm having one end bent to form a recess to fit the under surface of the axle of a tractor for supporting the steering wheels, said recess portion being provided with an opening for receiving a set screw, the rear end of said arm having a pair of slots, bolts for said slots, a scraper bar secured to said bolts, each end of said bar having downwardly and forwardly extending scraper members, a brace secured to the upper surface of said scraper arm extending upwardly and forwardly, the upper end of said brace bar terminating in a bifurcated portion having forwardly extending lugs, a bolt for said lugs, and a collar member adapted to be fixed above and below said bifurcated portions.

2. A scraper attachment for tractors comprising a flat scraper arm having one end bent to form a recess to fit the under surface of the axle of a tractor for supporting the steering wheels, said recess being provided with an opening for receiving a set screw, a scraper bar adjustably secured to the rear end of said arm, scrapers for said bar, abrace secured to the upper surface of the rear end of said bar extending upwardly and forwardly, the upper end of said brace terminating in a bifurcated annular portion adapted to receive the pivot supporting sleeve of an axle, and collars adapted to be fixed to said sleeve above and below said bifurcated portion, whereby the bifurcated portion will be supported against movement longitudinally of said sleeve and at the same time permit free movement of said bifurcated portion to rotate about said sleeve.

Des Moincs, Iowa, January 7, 1929.

JOHN P. BYSON. 

